Richard Earnshaw (lists) writes: > On 29/06/16 09:43, James Greenhalgh wrote: >> On Mon, Jun 27, 2016 at 03:58:00PM +0100, Jiong Wang wrote: >>> >>> The permissible values for @var{arch} are @samp{armv8-a}, >>> -@samp{armv8.1-a} or @var{native}. >>> +@samp{armv8.1-a}, @samp{armv8.2-a} or @var{native}. >>> + >>> +The value @samp{armv8.2-a} implies @samp{armv8.1-a} and enables compiler >>> +support for the ARMv8.2 architecture extensions. >> >> ARMv8.2-A here too please. > > Why do we need to say that v8.2-a implies v8.1-a, when we don't say that > v8.1-a implies v8-a? The whole implies clause seems unnecessary to me. > > R.
Hi Richard, The describe entries are organized in descending order. "v8.1-a implies v8-a", are right here below. | v >>> The value @samp{armv8.1-a} implies @samp{armv8-a} and enables compiler >>> support for the ARMv8.1 architecture extension. In particular, it >>> @@ -13140,6 +13143,8 @@ instructions. This is on by default for all >>> possible values for options >>> @item lse >>> Enable Large System Extension instructions. This is on by default for >>> @option{-march=armv8.1-a}. >>> +@item fp16 >>> +Enable FP16 extension. >> -- Regards, Jiong